Fibres and textiles

Question 1

Define natural fibres

Answer 1

this are from plant sources

Question 2

animals-wool

Answer 2

made from animal fleece- applications-
1. blankets
2. jackets
3.carpets

Question 3

state the advantages and disadvantages of wool

Answer 3

1. warm
2. breathable
3. absorbent
   however-
4. dries slowly
   2.can be itchy
5. washes poorly
6. can shrink
7. heavy when wet

Question 4

cotton

Answer 4

bolls the fruit cotton plants- machine harvested.
uses-
1. bandages
2. towels
3. underwear
4. t-shirts

Question 5

State the advantages and disadvantages of cotton

Answer 5

1. cool
   2.absorbent
   3.resist abrasion
   4.durable
2. does not stain easily
   however-
3. shrinks
4. slowly dries
5. creases easily

Question 6

Define what is meant by synthetic fibres

Answer 6

artificial fibres made from oil, coal and petrol based chemical.

Question 7

polyester

Answer 7

simple chemical monomers joined together to form polymers these are spun of yarns.
uses-
1. raincoat
2. medical textiles
3. working clothes

Question 8

State the advantages and disadvantages of polyester

Answer 8

1. mechanical strength when wet or dry.
2. dries quickly
3. resistant to abrasion
4. soft
5. durable
6. can be recycled
   however-
7. poor absorbent
8. not environmentally friendly
9. damaged by acids

Question 9

acrylic

Answer 9

sportswear, fleece jackets, blankets

Question 10

state the advantages and disadvantages of acrylic

Answer 10

1. warm
2. dries quickly
3. durable
4. crease resistant
   however-
5. poor absorbent
6. feels stiff
7. can irritate skin

Question 11

define what is meant by a warp

Question 12

Define what is meant by weft

Question 12

define what is meant by selvedge

Question 13

state the 3 properties of textiles

Answer 13

1. durability
2. elasticity
3. resilient

Question 14

state the advantages and disadvantages of twill weave demin

Answer 14

1. strong
2. hardwearing
3. hangs well
   however
4. frays
5. thickness makes it hard to use

Question 15

state the advantages and disadvantages of plain- weave calico

Answer 15

1. cheap to make
2. same both sides
3. strong
   however
4. firm.
5. varies quality

Question 16

state the advantages and disadvantages of warp knitted fabric

Answer 16

1. retains heat
2. does not unravel
3. fairly stretchy
   however
4. curls at edge
5. can lose shape

Question 17

state the advantages and disadvantages of weft knitted fabrics

Answer 17

1. comfortable
2. stretchy
3. fast production
   however-
4. ladder easily